Improvement in sewing-machines



B. J. :ANGELL Sewingl Machine.

Patented Feng, 1858.

@Mh/M N. PEYERs mlb-maman, wnhngwn. D4 C.

UNTTED STATES i, ATENT FFCEO IMPROVEMENT IN SEWING-IVIACHINES.

Sperlication forming part oi' Letters Patent No. MLESS, dated l `ebrm1r \.l, lca'i".

T0 all whom, it 71mg 0011,00/ 12,:

Be it vknown that I, BENJAMIN J. ANGELL, of Attleborough, in the county of Bristol and State of Massachusetts, have invented certain new and usef'ul Improvements in Sewing-Machines and I do hereby declare that the following is a l'ull, clear, and exact description thereof, reference being had io th accompz'mying drawings, and to the letters of reference marked thereon, in which- Figure l is a side elevation and section ol the entire.machine. Fig. 2 is a front elevation and section of the sewing apparatus. Fig. 25 is a plan of the stitch-hook and the mechan-V isms which operate the same. Fig. 4 is a plan oi' the presser. Fig. 5 is an end view of the presser and feed-bar.

The same letters refer to like parts in the different figures.

The machine herein described and represented belongs to that class which forms a chainstitch with asingle thread by means ofthe ordi nary machine-needle, combined with astitch- `hook which catches and spreads the loop (as the needle ascends and is withdrawn from the cloth) and carries the same beneath the needle in such a manner that4 the loop formed by -the successive descending stroke of the needle shall pass through the irst loop when the stitch-hook is withdrawn preparatory to catching up the second loop, the first loop being drawn up against the under side of the cloth by the descent of the needle, thus forming a stitch.

The nature of my improvement consists,

iirst, in the form and arrangement of the ap-` paratus for holding and feeding the cloth;

secondly, in the peculiar motion given to the stitch-hook and the method of operating the Slllle.

B B,&e., is the frame of the machine, of eastiron, the upper part of which is hollow, and contains the gears, pitman, lever, &c., which give motion to the needle-bar T.

A is a nose-piece (of brass) inclosing the needle-bar and the feed-rod C, which moves vertically therein, and through the rocker-arm C imparts a horizontal motion to the feed-bar g in suitable guides formed in the under surface of the foot A. The surface of the feedbar is furnished with barbs or hooks t t, &c.,

by means ol' which the motion of the feed-bar is communicated to the cloth. In feeding the surface (L a projects below the surface of the feed-bar, upon each side ofthe same, thereby permitting the surface of the feed-bar to move indepemlent oi" and free from contact with the cloth, which is acted upon by the points of the barbs only. The cloth is held between the surface n a, ol" the foot A and the face of the presser II, as indicated by the red lines in the lfigures. This presser is of steel, smoothly polished, and forms apart of the tablet m. It is acted upon and pressed upward against the surface a a by the spring a, which bears against the lever j', beneath to which the tablet is attached through the block F and frame F, and is retained in its properpositionby the thumbscrew s.

In the face of the presser are formed two grooves, s s, Fig. 4, whichl take in the barbs tt, Src., of the feed-bar, as shown 4in Figs. l

and 5, by which arrangement the grooves serve to force the barbs into the cloth, while the action of the spring upon the presser nicely adj usts the same to the thickness ofthe cloth, and, being secured thereat by the thumb-screw s, gently grips the clot-h between the two surfaces a (t and h 71., which combinedwith the grooves and feed-bar, produce a regular and effective feeding motion, while the grooves serve as guides in straight seaming, and also as a protection from injury to the barbs.

vBeneath the tablet is placed the stitch-hook e, of a proper form for readily catching and spreading the loop. It is made to slide horizontally in guides at P by motion imparted through the rocker-arms M N from the rod I, which receives its motion through the lever K from the revolving cam D, combined with the reaction of the spiral spring V. The stitchhook is governed in its motions by the cam B and the notch Zin the edge of the shank J, the latter being pressed against the point and inclined face of the former by the spring r. By this arrangement, combined with the vibrating motion imparted thereto from the cam D, the hook is made to move forward in a direct line, the edge, at j', bearing against the point of the cam, Fig. 3, to catch and spread the loop until the notch Z passes the point of the cam R, when the hook is suddenly thrown aside by the spring r, which places the loop 19 thus caught andspread, Figs. l, 2, and 3, in a position to receive the needle i with its successive loop as it descends. Vhen the needle has passed through to the loop sufficiently to y catch the same, the hook is suddenly withdrawn and thrown aside by the inclined edge of the notch in the shank, being guided by and riding upon the surface of the cam R, thus avoiding Contact with the yet descending needle, which, while forming a second loop, is also drawing the irst up against the cloth to form a stitch. rlhe second loop is quickly caught up when formed and properly arranged to receive the third, and so on.

I am aware that a method of causing the cloth to progress regularly (in feeding) by the joint action of the surfaces between 4which it is clamped has been previously patented by Allen B. Vilson. `I would not, therefore, be understood as claiming such device for this purpose.

What I claim as my invention, and desire io secure by Letters Patent, is-

The combination of the grooves s s of the presser, with the barbs tt t t of the feed-bar, and the surfaces a a and h h, with the thumbscrew s, arranged and operating substantially and for the purpose as herein set forth.

BENJAMIN J. ANGELL.

Vitnesses: l

IsAAo A. BROWNELL, H. M. RIoHARDs.

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